Fixing gcc 4.7 building problems.

webkit/plugins/ppapi/ppb_video_capture_impl.cc

Index: webkit/plugins/ppapi/ppb_video_capture_impl.cc
diff --git a/webkit/plugins/ppapi/ppb_video_capture_impl.cc b/webkit/plugins/ppapi/ppb_video_capture_impl.cc
index f1eb12c9b489e45723ac696f75a853e6b71d3665..9a00155ee0e72653d6a12f2628e3a8712153dff4 100644
--- a/webkit/plugins/ppapi/ppb_video_capture_impl.cc
+++ b/webkit/plugins/ppapi/ppb_video_capture_impl.cc
@@ -118,9 +118,9 @@ void PPB_VideoCapture_Impl::OnDeviceInfoReceived(
     media::VideoCapture* capture,
     const media::VideoCaptureParams& device_info) {
   PP_VideoCaptureDeviceInfo_Dev info = {
-    device_info.width,
-    device_info.height,
-    device_info.frame_per_second
+    static_cast<uint32_t>(device_info.width),
+    static_cast<uint32_t>(device_info.height),
+    static_cast<uint32_t>(device_info.frame_per_second)
   };
   ReleaseBuffers();